Fatal error: Uncaught Error: Class "MediaWikiLangTestCase" not found in /var/www/html/w/tests/phpunit/includes/OutputTransform/DefaultOutputPipelineFactoryTest.php:25 Stack trace: #0 {main} thrown in /var/www/html/w/tests/phpunit/includes/OutputTransform/DefaultOutputPipelineFactoryTest.php on line 25